APA (7th ed.) Citation

United Nations Educational Scientific and Cultural Organization. Social Science Documentation Center. (1981). World directory of peace research institutions (4th ed. rev.). Unesco.

Chicago Style (17th ed.) Citation

United Nations Educational Scientific and Cultural Organization. Social Science Documentation Center. World Directory of Peace Research Institutions. 4th ed. rev. Paris: Unesco, 1981.

MLA (9th ed.) Citation

United Nations Educational Scientific and Cultural Organization. Social Science Documentation Center. World Directory of Peace Research Institutions. 4th ed. rev. Unesco, 1981.